Engine-cylinder valve port and stem-guide structure



July 5 1927' a. o. ANGLE 3 ENGINE CYLINDERWALVE PCRT AND STEM GUIDE STRUCTURE FiledDeQ. so, 1920 2 Sheets-Sheet. 1

July 5 1927.

' 1,635,023 a. D. ANGLE ENGINE CYLINDER VALVE YGRT AND STEM GUIDE STRUCTURE Filed Dec. 50. 1920 '2 Sheets-Shae! 2 Patented July 5, 1927.

UNITED STATE GLENN DQANGLE, or DAYTON, OHIO.

ENGINE-CYLTNDER VALVE PORT AND STEM-GUIDE STRUCTURE.

7 Application filed December 30, 1920. Serial No. 434,132.

7 This invention relates to engine cylinder valve port and stem guide structures, the object in view being to improve the construction of such feature of an internal combustion engineobta1n1ng a free unobstructed flow of explosive 'mlxture to the engine,

and also enabling the valve stem guide element to be more etiiciently cooled by sub- 7 jecting the same thruout practically its en tire length tot-he cooling action of the water. The main difiiculties found in valve port structures combustion engines are. avoiding restrictions orobst-ructions to the free flow of mixture therct-hru, reduction of cross-sectional area due to protrusion of the valve' stem guide,

and obtaining water space sufficiently close a to the valve stemguide or bushing to insure proper cooling of the valve.

Under the improved construct-ion herein shown and described, the valve stem guide ismade separately from the main body of the valve port structure and consists, in the preferred embodiment of the invention, of a steel forging which is welded, or otherwise permanently fastened in-riproper relat-ionflto the main body of the structure, after certain machine operations. This permits the main body to be finished inside with a round ended mill, thus producing a radius bend in said main body. The valve stem guide is so made that the portion thereof extending into the main body is of a shape not to seriously restrict or obstructthegas flow, and it is also designed to be exposed externally to the cooling action of the water thruout practically its entire length. I

While the design herein illustrated is adapted. to have the cooling water contact therewith on one side only, the cooling surfacemay easily be made to extend over the greater part of the guide and in fact, over the entire outer surface thereof is required.

, -With the above and other objects in view,

the invention consists in the novel construction, combination, and arrangement here-in fullydescribed, illustrated and claimed.

In'the accompany drawings: Fig. I is a section thru the valve port and stem guide structure taken diametrically of the main body thereof and showing th stem guide element in elevation. I Fig. II is a view looking toward one end thereof.

of steel cylinders for internal I parts, each of which is subjected to certain F ig. III is view similar to Fig. .11, omitting the valve guide element.

Fig. IV is a view similar to'Fig. II, omitting the valve guide element.

Fig. V is a perspective view of FigLIII. Fig. V1 is a side elevation of the valve guide. 1

Fig. VII is an end view thereof. Fig. VIII is a view looking toward the inner end of the valve stem guide.

The improved engine cylinder valveport and stemguide structure is madein two machine operations before the two members are brought into proper relation to each other; 10 designates the main body member, while 11 represents the stem guide member or-element. The mainbodymemher or element is of tubular formation and 1S composed preferably of a steel forging,

which is subsequently finished internally by means of a round headed hemispherical milling 'cutteu- This. produces, a radius bend corresponding for the purpose of illustration with the line 12 in Fig. I, the milling cutter being inserted first thru the inlet end 13 of the body 10, and being inserted subsequently thru the outlet orifice let of the said main body 10.

In a subsequent operation, a receivingorifice 15 is formed in the outer wall of the J radius bend as shownfor examplein Figures 3, 4 and 5, the latter being designed to receive and permanently hold in place the valve stem guide element 11. stem guide comprises a main tubular body with central bore 16, which is rebored to the proper size, and along the proper axis after The valve described, both of the members or elements of the structure, are formed separately and Ill may therefore be properly lnilled or otherwise treated before they are brought into eonibination. It is intended to weld such parts together alt-ho any other method of permanently attaching said parts together may be utilized.

It will be readily seen as; compared with the ordinary construction, the lion oi HllX- ture thru the structure is greatly facilitated as there are no abrupt angles or pockets to obstruct the flow. The valve guide body, which protrudes into the tubular body 10, has a halt round face to meet the inllouing gas: While at opposite sides oi the body 11 there are quadrant shaped spaces tor the grus flow which spaces have their outer walls curved coincident with the curvature of the outer wall of the 'adius bend herein above referred to. This results in keeping the valve cool as the valve guide is subjected to the cooling action of the iutlowinp lIllEI- tureas Well as the cooling; water which coir acts with the body of the valve stem guide tln'uout pnctically the Whole length therrot.

l clain 1. An engine cylinder alve port and stem guide structure, comprising: a tubular main body having); a radius bend and a reception orilice in the outer "wall oi" such bend, a 'alve stein guide termed sepa 'ately :lroni said main body and having; a Water receiving and cooling pocket cast. integral therewith. said guide being; inserted through said Orilice andv permanently attached to said main body in such a. manner that the Water pocket "wholly within the confines of said adius bend and in conformity with the contour thereof.

An engine cylinder alve port and stem guide structure, comprising a tubular main body and having a radius bend and a reception orifice in the outer Wall of such bend, a valve stem. guide formed separately from said main body and having a Water receiving: and cooling pocket 0: at integral therewith, said guide being inserted through said oritice and permanently attached to said main body in such a manner that the Water pocket is wholly within the confines oi said adius bend and in conformity with the contour thereof, said guide having its Wall exposed to the cooling action of Water tl'irougbout .sult stantially its entirt length.

3. An engine cylinder valve port and stem e uide structure, comprising a tubular main body having a radiua bend and a reception orifice in the outer wall oi such bend. and a valve stem guide torined separately from said main. body and permanently fastened in said orilice. said guide having attaching: wings in spaced relation to each other to form an interreuine W3lTGP-ltCPl'VlllQ and cooling space to admitivater t0 the Wall of the guide Within the eonlines ot the radius bend.

4 An engine cylinder 'alve port and stem guide. structure. (OlilPllflllilQ a tubular main body having a adius bend and a reception orilice in the outer wall of such bend, and a valve stein guide formed separately from said main body and permanently "fastened in said orifice, liavine on opposite sides of the valve guide quadrant shaped gas flow spaces with walls having the cur 'ature ol said radius bend.

In testimony whereof I have allixed iny t lglitlllllle.

(ilLENN D. ANGLE. 

